function growYears(_part,_liwidth,_speed){
	var _menu = $("#grows_years a");
	var _sum = $("#grows_sum");
	var _span = $("#grows_now");
	var _index = 0;
	var _now = 0;
	
	_menu.click(function(){
		_now = $("#grows_years").find(".sel").index();
		_index = $(this).index();
		var _spango = _index * _part;
		var _sumgo = -_index * _liwidth;
		if(_index < _menu.length-1){
			_menu.removeClass("sel");
			_sum.animate({left:_sumgo+"px"},_speed);
			_span.animate({left:_spango+"px"},_speed,function(){
				_menu.eq(_index).addClass("sel");
				});
		}
		
	});
}